High School Musical wank
Over on LJ's idontdance community, devoted to (apparently) a High School Musical slash couple, the mods post to ask people to please avoid making potentially racist remarks regarding the hair of one of the two characters involved.

Predictably, the wank is started in the first comment by killerspork33, who takes every possible opportunity to point out that s/h/it knows a white person with hair like that!, and goes on to contribute half the comments and 80% of the point-missing and general wankery to the post as a whole.

Fortunately for the lulz-to-serious ratio of the wank, it's not all standard racism wank -- we have alethalia wanking about how edgy and un-PC s/h/it is and how the mods are being oppressive and are suppressing s/h/it's speech.

headachehead wanks over use of the word "retarded" as a generalized insult, is offended at being called immature, and complains about being disrespected for "having a sense of humor."

Small in terms of comment-count, but efficiently packaged. Now that it's hit metafandom in a comment, it might even expand.